@mijostyn Anthem finally got back to me on this. It seems that adjustments can be made with the ML Perfect Bass Kit by enabling the Professional Mode. I'm not sure if I'll know what I'm doing once in the program, but at least it's a start. Here is their response:
There are many YouTube videos that exist to aid you with the ARC process, however these tend to be more product specific. You are welcome to share your ARC file so that we may take a look and make the adjustments you are looking for. Be advised flattening the response curve does usually result in "lower" bass, but there are ways to adjust this such as using the Room Gain and Deep Bass Boost settings in ARC Genesis.
@wolf_garcia maybe I could "Float" the subs?